head & shoulders was also the beginning of the end for me. whatever weak hairs were hanging on, they left me, and thinning became obvious quickly.
The bottom line is that you have to go from being cute attractive, to being manly attractive. You have to own it, to embrace it. A combover really does look bad. A huge forehead really does look terrible.
Turn on the iphone, do an overhead video clip, and you'll see what others see... an indecisive man with weak spots on head. Own that shit, buzz it. You CANNOT get fat, because fat/bald looks like absolute crap. Facial hair can help offset it.
Above all, it's attitude. The Rock stands next to a hair-ful movie star dude like a stephen Dorff and he pwns the crap out of him. Because he has muscle, epic leanz, and he's powerful personality that dominates. You have to take the self-doubting balding beta within you, and slash his throat, make it messy.